Speed Scientific School testing for distilleries, University of Louisville, Louisville, Kentucky, 1936. On a floor of concrete squares sit two large, dark metal machines, and to the right, a simple table. The machine in back has an arm at the left...

Men at work, Fehr's Brewery, Louisville, Kentucky. Three men, two of them on machinery above the floor, tinker with a wheel and other controls on heavy machinery at Fehr's Brewery. In the foreground is a wood barrel and a small wood fenced...

Erosion control near Marion, Kentucky. A shirtless man controls a tractor through the dirt as a man to his right observes from a rock and dirt pile. In the distance behind them is a large truck in front of a steep dirt bank.

Don Evans, in dark room cabin, (cabin of boat has been converted for making of photographic recordings) of geophone boat sets volume controls for each of six geophones. Each geophone is hooked to its own audio-control and thence to seismograph...